[PATCH] D53207: Fix bug 26547 - alignof should return ABI alignment, not preferred alignment

[Nicole Mazzuca via Phabricator via cfe-commits]

ubsan created this revision.
ubsan added a reviewer: rsmith.
Herald added a subscriber: cfe-commits.

- Add `UETT_PreferredAlignOf` to account for the difference between `__alignof` and `alignof`
- `AlignOfType` now returns ABI alignment instead of preferred alignment iff clang-abi-compat > 7, and one uses _Alignof or alignof

bug link: https://bugs.llvm.org/show_bug.cgi?id=26547


Repository:
  rC Clang

https://reviews.llvm.org/D53207

Files:
  include/clang/ASTMatchers/ASTMatchers.h
  include/clang/Basic/LangOptions.h
  include/clang/Basic/TypeTraits.h
  lib/AST/ASTDumper.cpp
  lib/AST/Expr.cpp
  lib/AST/ExprConstant.cpp
  lib/AST/ItaniumMangle.cpp
  lib/AST/StmtPrinter.cpp
  lib/Parse/ParseExpr.cpp
  lib/Sema/SemaChecking.cpp
  lib/Sema/SemaExpr.cpp

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